The data contained herein are the results of a grazing exclosure experiment on the Henry Mountains of S. Utah [38°5’ N, 100°50’W]. Exclosures were erected in October 2011 and the standing crop of grass inside both exclosure types (full and partial), as well as an open reference plot was clipped in October 2012. Additionally, the local ranching community was surveyed to measure their perceptions of a bison – cattle conflict in the Henry Mountains. For full details, see: Ranglack, D. H., S. Durham, and J. T. du Toit. 2015. Competition on the range: science versus perception in a bison – cattle conflict in the western USA. Journal of Applied Ecology. In press. ExclosureData.csv contains the grass biomass values (g m-2) for the three plot types, as well as the log RDI value for each site. Ref = grass biomass for the grazed reference plot (g m-2) Full = grass biomass for the partial exclosure (g m-2; excluded bison + cattle + lagomorphs) Partial = grass biomass for the partial exclosure (g m-2; excluded bison + cattle) log_RDI = log of the Relative Density Index. Values > than 0 indicate > than expected bison use, values < 0 indicate < than expected bison use. SurveyData.csv contains the applicable results of the rancher survey. Survey # = unique number assigned to each survey upon mailing. Sp_Forage = the rancher’s assessment of the probability of competition for forage between cattle and bison in the Henry Mountains in the spring, where 1 = ‘low’, 2 = ‘medium’, and 3 = ‘high’. Su_Forage = the rancher’s assessment of the probability of competition for forage between cattle and bison in the Henry Mountains in the summer, where 1 = ‘low’, 2 = ‘medium’, and 3 = ‘high’. Fa_Forage = the rancher’s assessment of the probability of competition for forage between cattle and bison in the Henry Mountains in the fall, where 1 = ‘low’, 2 = ‘medium’, and 3 = ‘high’. Wi_Forage = the rancher’s assessment of the probability of competition for forage between cattle and bison in the Henry Mountains in the winter, where 1 = ‘low’, 2 = ‘medium’, and 3 = ‘high’. Sp_Water = the rancher’s assessment of the probability of competition for water between cattle and bison in the Henry Mountains in the spring, where 1 = ‘low’, 2 = ‘medium’, and 3 = ‘high’. Su_Water = the rancher’s assessment of the probability of competition for water between cattle and bison in the Henry Mountains in the summer, where 1 = ‘low’, 2 = ‘medium’, and 3 = ‘high’. Fa_Water = the rancher’s assessment of the probability of competition for water between cattle and bison in the Henry Mountains in the fall, where 1 = ‘low’, 2 = ‘medium’, and 3 = ‘high’. Wi_Water = the rancher’s assessment of the probability of competition for water between cattle and bison in the Henry Mountains in the winter, where 1 = ‘low’, 2 = ‘medium’, and 3 = ‘high’. Sp_Disturb = the rancher’s assessment of the probability of aggression or disturbance between cattle and bison in the Henry Mountains in the spring, where 1 = ‘low’, 2 = ‘medium’, and 3 = ‘high’. Su_Disturb = the rancher’s assessment of the probability of aggression or disturbance between cattle and bison in the Henry Mountains in the summer, where 1 = ‘low’, 2 = ‘medium’, and 3 = ‘high’. Fa_Disturb = the rancher’s assessment of the probability of aggression or disturbance between cattle and bison in the Henry Mountains in the fall, where 1 = ‘low’, 2 = ‘medium’, and 3 = ‘high’. Wi_Disturb = the rancher’s assessment of the probability of aggression or disturbance between cattle and bison in the Henry Mountains in the winter, where 1 = ‘low’, 2 = ‘medium’, and 3 = ‘high’. Sp_Deer = the rancher’s assessment of the negative effect of mule deer on the overall amount of forage available to cattle in the Henry mountains in the spring, where 1 = ‘low’, 2 = ‘medium’, and 3 = ‘high’. Su_Deer = the rancher’s assessment of the negative effect of mule deer on the overall amount of forage available to cattle in the Henry mountains in the summer, where 1 = ‘low’, 2 = ‘medium’, and 3 = ‘high’. Fa_Deer = the rancher’s assessment of the negative effect of mule deer on the overall amount of forage available to cattle in the Henry mountains in the fall, where 1 = ‘low’, 2 = ‘medium’, and 3 = ‘high’. Wi_Deer = the rancher’s assessment of the negative effect of mule deer on the overall amount of forage available to cattle in the Henry mountains in the winter, where 1 = ‘low’, 2 = ‘medium’, and 3 = ‘high’. Sp_Bison = the rancher’s assessment of the negative effect of bison on the overall amount of forage available to cattle in the Henry mountains in the spring, where 1 = ‘low’, 2 = ‘medium’, and 3 = ‘high’. Su_Bison = the rancher’s assessment of the negative effect of bison on the overall amount of forage available to cattle in the Henry mountains in the summer, where 1 = ‘low’, 2 = ‘medium’, and 3 = ‘high’. Fa_Bison = the rancher’s assessment of the negative effect of bison on the overall amount of forage available to cattle in the Henry mountains in the fall, where 1 = ‘low’, 2 = ‘medium’, and 3 = ‘high’. Wi_Bison = the rancher’s assessment of the negative effect of bison on the overall amount of forage available to cattle in the Henry mountains in the winter, where 1 = ‘low’, 2 = ‘medium’, and 3 = ‘high’. Sp_JR = the rancher’s assessment of the negative effect of jackrabbits on the overall amount of forage available to cattle in the Henry mountains in the spring, where 1 = ‘low’, 2 = ‘medium’, and 3 = ‘high’. Su_JR = the rancher’s assessment of the negative effect of jackrabbits on the overall amount of forage available to cattle in the Henry mountains in the summer, where 1 = ‘low’, 2 = ‘medium’, and 3 = ‘high’. Fa_JR = the rancher’s assessment of the negative effect of jackrabbits on the overall amount of forage available to cattle in the Henry mountains in the fall, where 1 = ‘low’, 2 = ‘medium’, and 3 = ‘high’. Wi_JR = the rancher’s assessment of the negative effect of jackrabbits on the overall amount of forage available to cattle in the Henry mountains in the winter, where 1 = ‘low’, 2 = ‘medium’, and 3 = ‘high’. Control_Coyote = Does the rancher believe the coyote population should be controlled in the Henry Mountains, where 1 = ‘yes’ and 0 = ‘no’. CC_Deer = The amount of benefit the rancher believes mule deer populations receive from coyote control on the Henry Mountains, where 1 = ‘low’, 2 = ‘medium’, and 3 = ‘high’. CC_Livestock = The amount of benefit the rancher believes livestock populations receive from coyote control on the Henry Mountains, where 1 = ‘low’, 2 = ‘medium’, and 3 = ‘high’.